Calorimetric Studies of the Martensitic Transformation in Ni-Mn-Ga Ferromagnetic Shape Memory Alloys

Andrei Novac; Sergiu Barbos; Roxana Sprincenatu; Madalin Condel; Ion Mitelea; Corneliu Craciunescu

doi:10.4028/www.scientific.net/SSP.254.149

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HomeSolid State PhenomenaSolid State Phenomena Vol. 254Calorimetric Studies of the Martensitic...

Calorimetric Studies of the Martensitic Transformation in Ni-Mn-Ga Ferromagnetic Shape Memory Alloys

Abstract:

The thermal characteristics of the martensitic transformation in Ni-Mn-Ga alloys were studied using differential calorimetry in order to assess the influence of quenching and the heating rate on the resulting thermal properties. Following solution annealing at 850 °C and water quenching, sharper peaks are observed. The martensitic microstructure was observed by both optical and electron microscopy, showing typical needle like morphology and the martensitic transformation kinetics was analyzed using the Kissinger approach.

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Solid State Phenomena (Volume 254)

Pages:

149-152

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.254.149

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Online since:

August 2016

Authors:

Andrei Novac, Sergiu Barbos, Roxana Sprincenatu, Madalin Condel, Ion Mitelea, Corneliu Craciunescu*

Keywords:

Martensitic Transformation, Shape Memory Alloys, Transformation Temperatures

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References

[1] R.D. James, M. Wutig, Magnetostriction of martensite, Philosophical magazine A, vol. 77, No. 5, (1998) 1273-1299.

Google Scholar

[2] I. Vassiliev – Magnetically driven shape memory alloys, Journal of Magnetism and Magnetic Materials, 242-245 (2002) 66-67.

DOI: 10.1016/s0304-8853(01)01192-1

Google Scholar

[3] P. J. Webster, K. R. A. Ziebeck, S. L. Town, and M. S. Peak, Magnetic order and magnetic field induced entropy change and magnetoelasticity in Ni-Mn-Ga, Phil. Mag. B 49, 295 (1984).

Google Scholar

[4] K. Ullakko, J.K. Huang, C. Kantner, R.C. O'Handley, and V.V. Kokorin, Appl. Phys. Lett. 69, 1966 (1996).

Google Scholar

[5] R. Tickle and R.D. James, J. Magn. Magn. Mater. 195, 627 (1999).

Google Scholar

[7] H.D. Chopra, C. Ji, V.V. Kokorin, Magnetic-field-induced twin boundary motion in magnetic shape-memory alloys, Physical Review B Volume 61, Number 22, (2000).

DOI: 10.1103/physrevb.61.r14913

Google Scholar